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lumbar

adjective
🔊/ˈlʌmbə(r)/
🔊/ˈlʌmbər/
[only before noun] (medical医学)
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  1. relating to the lower part of the back腰（部）的
    • pain in the lumbar region腰痛
    Oxford Collocations DictionaryLumbar is used with these nouns:
    • region
    • spine
    See full entry
    Word Originmid 17th cent.: from medieval Latin lumbaris, from Latin lumbus ‘loin’.